In Fig.18 `A , B , C` are collinear point and `/_D B A=\ /_E B Adot` (i) Name two linear pairs (ii) Name two pairs of supplementary angles.

In Fig.18A,B,C are collinear point and /_DBA=/_EBA .(i) Name two linear pairs (ii) Name two pairs of supplementary angles.

PTNM is a rectangle. Write the names of the pairs of supplementary angles.

In Fig. 5.39, P, Q and R are collinear points and TQ bot PR, Name, (a) pair of complementary angles (b) two pairs of supplementary angles. (c) four pairs of adjacent angles.

Name the four pairs of supplementary angles shown in Fig.17.

Name the four pairs of supplementary angles shown in Fig.17.

Two obtuse angles can not form a pair of supplementary angles. Justify.

Two acute angles cannot form a pair of supplementary angles. Justify.

Two acute angles cannot form a pair of supplementary angles. Give example.

In Fig.14, name all the pairs of adjacent angles.

In Fig.14, name all the pairs of adjacent angles.